Wendy bought 6 cupcakes more than cookies. Each cupcake cost $1.40 while each cookie cost $1.80. Given that she spent $27.60 in total, how many cookies did Wendy buy?
| |
Cookies |
Cupcakes |
Total |
| Number |
1 u |
1 u + 6 |
|
| Value |
$1.80 |
$1.40 |
|
| Total value |
1.8 u |
1.4 u + 8.4 |
1.4 u + 8.4 |
Amount that Wendy paid for the cookies
= 1 u x 1.80
= 1.8 u
Amount that Wendy paid for cupcakes
= 1.4 x (1 u + 6)
= 1.4 u + 8.4
Total amount that Wendy paid
= 1.8 u + 1.4 u + 8.4
= 3.2 u + 8.4
3.2 u + 8.4 = 27.6
3.2 u = 27.6 - 8.4
3.2 u = 19.2
1 u = 19.2 ÷ 3.2 = 6
Number of cookies that Wendy bought
= 1 u
= 6
Answer(s): 6
